lib/librte_eal/common/rte_service.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2017 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stdio.h>
  35 #include <unistd.h>
  36 #include <inttypes.h>
  37 #include <limits.h>
  38 #include <string.h>
  39 #include <dirent.h>
  40
  41 #include <rte_service.h>
  42 #include "include/rte_service_component.h"
  43
  44 #include <rte_eal.h>
  45 #include <rte_lcore.h>
  46 #include <rte_common.h>
  47 #include <rte_debug.h>
  48 #include <rte_cycles.h>
  49 #include <rte_atomic.h>
  50 #include <rte_memory.h>
  51 #include <rte_malloc.h>
  52
  53 #define RTE_SERVICE_NUM_MAX 64
  54
  55 #define SERVICE_F_REGISTERED    (1 << 0)
  56 #define SERVICE_F_STATS_ENABLED (1 << 1)
  57
  58 /* runstates for services and lcores, denoting if they are active or not */
  59 #define RUNSTATE_STOPPED 0
  60 #define RUNSTATE_RUNNING 1
  61
  62 /* internal representation of a service */
  63 struct rte_service_spec_impl {
  64         /* public part of the struct */
  65         struct rte_service_spec spec;
  66
  67         /* atomic lock that when set indicates a service core is currently
  68          * running this service callback. When not set, a core may take the
  69          * lock and then run the service callback.
  70          */
  71         rte_atomic32_t execute_lock;
  72
  73         /* API set/get-able variables */
  74         int32_t runstate;
  75         uint8_t internal_flags;
  76
  77         /* per service statistics */
  78         uint32_t num_mapped_cores;
  79         uint64_t calls;
  80         uint64_t cycles_spent;
  81 } __rte_cache_aligned;
  82
  83 /* the internal values of a service core */
  84 struct core_state {
  85         /* map of services IDs are run on this core */
  86         uint64_t service_mask;
  87         uint8_t runstate; /* running or stopped */
  88         uint8_t is_service_core; /* set if core is currently a service core */
  89
  90         /* extreme statistics */
  91         uint64_t calls_per_service[RTE_SERVICE_NUM_MAX];
  92 } __rte_cache_aligned;
  93
  94 static uint32_t rte_service_count;
  95 static struct rte_service_spec_impl *rte_services;
  96 static struct core_state *lcore_states;
  97 static uint32_t rte_service_library_initialized;
  98
  99 int32_t rte_service_init(void)
 100 {
 101         if (rte_service_library_initialized) {
 102                 printf("service library init() called, init flag %d\n",
 103                         rte_service_library_initialized);
 104                 return -EALREADY;
 105         }
 106
 107         rte_services = rte_calloc("rte_services", RTE_SERVICE_NUM_MAX,
 108                         sizeof(struct rte_service_spec_impl),
 109                         RTE_CACHE_LINE_SIZE);
 110         if (!rte_services) {
 111                 printf("error allocating rte services array\n");
 112                 return -ENOMEM;
 113         }
 114
 115         lcore_states = rte_calloc("rte_service_core_states", RTE_MAX_LCORE,
 116                         sizeof(struct core_state), RTE_CACHE_LINE_SIZE);
 117         if (!lcore_states) {
 118                 printf("error allocating core states array\n");
 119                 return -ENOMEM;
 120         }
 121
 122         int i;
 123         int count = 0;
 124         struct rte_config *cfg = rte_eal_get_configuration();
 125         for (i = 0; i < RTE_MAX_LCORE; i++) {
 126                 if (lcore_config[i].core_role == ROLE_SERVICE) {
 127                         if ((unsigned int)i == cfg->master_lcore)
 128                                 continue;
 129                         rte_service_lcore_add(i);
 130                         count++;
 131                 }
 132         }
 133
 134         rte_service_library_initialized = 1;
 135         return 0;
 136 }
 137
 138 /* returns 1 if service is registered and has not been unregistered
 139  * Returns 0 if service never registered, or has been unregistered
 140  */
 141 static inline int
 142 service_valid(uint32_t id)
 143 {
 144         return !!(rte_services[id].internal_flags & SERVICE_F_REGISTERED);
 145 }
 146
 147 /* validate ID and retrieve service pointer, or return error value */
 148 #define SERVICE_VALID_GET_OR_ERR_RET(id, service, retval) do {          \
 149         if (id >= RTE_SERVICE_NUM_MAX || !service_valid(id))            \
 150                 return retval;                                          \
 151         service = &rte_services[id];                                    \
 152 } while (0)
 153
 154 /* returns 1 if statistics should be colleced for service
 155  * Returns 0 if statistics should not be collected for service
 156  */
 157 static inline int
 158 service_stats_enabled(struct rte_service_spec_impl *impl)
 159 {
 160         return !!(impl->internal_flags & SERVICE_F_STATS_ENABLED);
 161 }
 162
 163 static inline int
 164 service_mt_safe(struct rte_service_spec_impl *s)
 165 {
 166         return s->spec.capabilities & RTE_SERVICE_CAP_MT_SAFE;
 167 }
 168
 169 int32_t rte_service_set_stats_enable(uint32_t id, int32_t enabled)
 170 {
 171         struct rte_service_spec_impl *s;
 172         SERVICE_VALID_GET_OR_ERR_RET(id, s, 0);
 173
 174         if (enabled)
 175                 s->internal_flags |= SERVICE_F_STATS_ENABLED;
 176         else
 177                 s->internal_flags &= ~(SERVICE_F_STATS_ENABLED);
 178
 179         return 0;
 180 }
 181
 182 uint32_t
 183 rte_service_get_count(void)
 184 {
 185         return rte_service_count;
 186 }
 187
 188 int32_t rte_service_get_by_name(const char *name, uint32_t *service_id)
 189 {
 190         if (!service_id)
 191                 return -EINVAL;
 192
 193         int i;
 194         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 195                 if (service_valid(i) &&
 196                                 strcmp(name, rte_services[i].spec.name) == 0) {
 197                         *service_id = i;
 198                         return 0;
 199                 }
 200         }
 201
 202         return -ENODEV;
 203 }
 204
 205 const char *
 206 rte_service_get_name(uint32_t id)
 207 {
 208         struct rte_service_spec_impl *s;
 209         SERVICE_VALID_GET_OR_ERR_RET(id, s, 0);
 210         return s->spec.name;
 211 }
 212
 213 int32_t
 214 rte_service_probe_capability(uint32_t id, uint32_t capability)
 215 {
 216         struct rte_service_spec_impl *s;
 217         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 218         return s->spec.capabilities & capability;
 219 }
 220
 221 int32_t
 222 rte_service_component_register(const struct rte_service_spec *spec,
 223                                uint32_t *id_ptr)
 224 {
 225         uint32_t i;
 226         int32_t free_slot = -1;
 227
 228         if (spec->callback == NULL || strlen(spec->name) == 0)
 229                 return -EINVAL;
 230
 231         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 232                 if (!service_valid(i)) {
 233                         free_slot = i;
 234                         break;
 235                 }
 236         }
 237
 238         if ((free_slot < 0) || (i == RTE_SERVICE_NUM_MAX))
 239                 return -ENOSPC;
 240
 241         struct rte_service_spec_impl *s = &rte_services[free_slot];
 242         s->spec = *spec;
 243         s->internal_flags |= SERVICE_F_REGISTERED;
 244
 245         rte_smp_wmb();
 246         rte_service_count++;
 247
 248         if (id_ptr)
 249                 *id_ptr = free_slot;
 250
 251         return 0;
 252 }
 253
 254 int32_t
 255 rte_service_component_unregister(uint32_t id)
 256 {
 257         uint32_t i;
 258         struct rte_service_spec_impl *s;
 259         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 260
 261         rte_service_count--;
 262         rte_smp_wmb();
 263
 264         s->internal_flags &= ~(SERVICE_F_REGISTERED);
 265
 266         /* clear the run-bit in all cores */
 267         for (i = 0; i < RTE_MAX_LCORE; i++)
 268                 lcore_states[i].service_mask &= ~(UINT64_C(1) << id);
 269
 270         memset(&rte_services[id], 0, sizeof(struct rte_service_spec_impl));
 271
 272         return 0;
 273 }
 274
 275 int32_t
 276 rte_service_runstate_set(uint32_t id, uint32_t runstate)
 277 {
 278         struct rte_service_spec_impl *s;
 279         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 280
 281         if (runstate)
 282                 s->runstate = RUNSTATE_RUNNING;
 283         else
 284                 s->runstate = RUNSTATE_STOPPED;
 285
 286         rte_smp_wmb();
 287         return 0;
 288 }
 289
 290 int32_t
 291 rte_service_runstate_get(uint32_t id)
 292 {
 293         struct rte_service_spec_impl *s;
 294         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 295
 296         return (s->runstate == RUNSTATE_RUNNING) && (s->num_mapped_cores > 0);
 297 }
 298
 299 static inline void
 300 rte_service_runner_do_callback(struct rte_service_spec_impl *s,
 301                                struct core_state *cs, uint32_t service_idx)
 302 {
 303         void *userdata = s->spec.callback_userdata;
 304
 305         if (service_stats_enabled(s)) {
 306                 uint64_t start = rte_rdtsc();
 307                 s->spec.callback(userdata);
 308                 uint64_t end = rte_rdtsc();
 309                 s->cycles_spent += end - start;
 310                 cs->calls_per_service[service_idx]++;
 311                 s->calls++;
 312         } else
 313                 s->spec.callback(userdata);
 314 }
 315
 316 static int32_t
 317 rte_service_runner_func(void *arg)
 318 {
 319         RTE_SET_USED(arg);
 320         uint32_t i;
 321         const int lcore = rte_lcore_id();
 322         struct core_state *cs = &lcore_states[lcore];
 323
 324         while (lcore_states[lcore].runstate == RUNSTATE_RUNNING) {
 325                 const uint64_t service_mask = cs->service_mask;
 326                 for (i = 0; i < rte_service_count; i++) {
 327                         struct rte_service_spec_impl *s = &rte_services[i];
 328                         if (s->runstate != RUNSTATE_RUNNING ||
 329                                         !(service_mask & (UINT64_C(1) << i)))
 330                                 continue;
 331
 332                         /* check do we need cmpset, if MT safe or <= 1 core
 333                          * mapped, atomic ops are not required.
 334                          */
 335                         const int use_atomics = (service_mt_safe(s) == 0) &&
 336                                                 (s->num_mapped_cores > 1);
 337                         if (use_atomics) {
 338                                 uint32_t *lock = (uint32_t *)&s->execute_lock;
 339                                 if (rte_atomic32_cmpset(lock, 0, 1)) {
 340                                         rte_service_runner_do_callback(s, cs, i);
 341                                         rte_atomic32_clear(&s->execute_lock);
 342                                 }
 343                         } else
 344                                 rte_service_runner_do_callback(s, cs, i);
 345                 }
 346
 347                 rte_smp_rmb();
 348         }
 349
 350         lcore_config[lcore].state = WAIT;
 351
 352         return 0;
 353 }
 354
 355 int32_t
 356 rte_service_lcore_count(void)
 357 {
 358         int32_t count = 0;
 359         uint32_t i;
 360         for (i = 0; i < RTE_MAX_LCORE; i++)
 361                 count += lcore_states[i].is_service_core;
 362         return count;
 363 }
 364
 365 int32_t
 366 rte_service_lcore_list(uint32_t array[], uint32_t n)
 367 {
 368         uint32_t count = rte_service_lcore_count();
 369         if (count > n)
 370                 return -ENOMEM;
 371
 372         if (!array)
 373                 return -EINVAL;
 374
 375         uint32_t i;
 376         uint32_t idx = 0;
 377         for (i = 0; i < RTE_MAX_LCORE; i++) {
 378                 struct core_state *cs = &lcore_states[i];
 379                 if (cs->is_service_core) {
 380                         array[idx] = i;
 381                         idx++;
 382                 }
 383         }
 384
 385         return count;
 386 }
 387
 388 int32_t
 389 rte_service_lcore_count_services(uint32_t lcore)
 390 {
 391         if (lcore >= RTE_MAX_LCORE)
 392                 return -EINVAL;
 393
 394         struct core_state *cs = &lcore_states[lcore];
 395         if (!cs->is_service_core)
 396                 return -ENOTSUP;
 397
 398         return __builtin_popcountll(cs->service_mask);
 399 }
 400
 401 int32_t
 402 rte_service_start_with_defaults(void)
 403 {
 404         /* create a default mapping from cores to services, then start the
 405          * services to make them transparent to unaware applications.
 406          */
 407         uint32_t i;
 408         int ret;
 409         uint32_t count = rte_service_get_count();
 410
 411         int32_t lcore_iter = 0;
 412         uint32_t ids[RTE_MAX_LCORE];
 413         int32_t lcore_count = rte_service_lcore_list(ids, RTE_MAX_LCORE);
 414
 415         if (lcore_count == 0)
 416                 return -ENOTSUP;
 417
 418         for (i = 0; (int)i < lcore_count; i++)
 419                 rte_service_lcore_start(ids[i]);
 420
 421         for (i = 0; i < count; i++) {
 422                 /* do 1:1 core mapping here, with each service getting
 423                  * assigned a single core by default. Adding multiple services
 424                  * should multiplex to a single core, or 1:1 if there are the
 425                  * same amount of services as service-cores
 426                  */
 427                 ret = rte_service_map_lcore_set(i, ids[lcore_iter], 1);
 428                 if (ret)
 429                         return -ENODEV;
 430
 431                 lcore_iter++;
 432                 if (lcore_iter >= lcore_count)
 433                         lcore_iter = 0;
 434
 435                 ret = rte_service_runstate_set(i, 1);
 436                 if (ret)
 437                         return -ENOEXEC;
 438         }
 439
 440         return 0;
 441 }
 442
 443 static int32_t
 444 service_update(struct rte_service_spec *service, uint32_t lcore,
 445                 uint32_t *set, uint32_t *enabled)
 446 {
 447         uint32_t i;
 448         int32_t sid = -1;
 449
 450         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 451                 if ((struct rte_service_spec *)&rte_services[i] == service &&
 452                                 service_valid(i)) {
 453                         sid = i;
 454                         break;
 455                 }
 456         }
 457
 458         if (sid == -1 || lcore >= RTE_MAX_LCORE)
 459                 return -EINVAL;
 460
 461         if (!lcore_states[lcore].is_service_core)
 462                 return -EINVAL;
 463
 464         uint64_t sid_mask = UINT64_C(1) << sid;
 465         if (set) {
 466                 if (*set) {
 467                         lcore_states[lcore].service_mask |= sid_mask;
 468                         rte_services[sid].num_mapped_cores++;
 469                 } else {
 470                         lcore_states[lcore].service_mask &= ~(sid_mask);
 471                         rte_services[sid].num_mapped_cores--;
 472                 }
 473         }
 474
 475         if (enabled)
 476                 *enabled = (lcore_states[lcore].service_mask & (sid_mask));
 477
 478         rte_smp_wmb();
 479
 480         return 0;
 481 }
 482
 483 int32_t
 484 rte_service_map_lcore_set(uint32_t id, uint32_t lcore, uint32_t enabled)
 485 {
 486         struct rte_service_spec_impl *s;
 487         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 488         uint32_t on = enabled > 0;
 489         return service_update(&s->spec, lcore, &on, 0);
 490 }
 491
 492 int32_t
 493 rte_service_map_lcore_get(uint32_t id, uint32_t lcore)
 494 {
 495         struct rte_service_spec_impl *s;
 496         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 497         uint32_t enabled;
 498         int ret = service_update(&s->spec, lcore, 0, &enabled);
 499         if (ret == 0)
 500                 return enabled;
 501         return ret;
 502 }
 503
 504 int32_t rte_service_lcore_reset_all(void)
 505 {
 506         /* loop over cores, reset all to mask 0 */
 507         uint32_t i;
 508         for (i = 0; i < RTE_MAX_LCORE; i++) {
 509                 lcore_states[i].service_mask = 0;
 510                 lcore_states[i].is_service_core = 0;
 511                 lcore_states[i].runstate = RUNSTATE_STOPPED;
 512         }
 513         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++)
 514                 rte_services[i].num_mapped_cores = 0;
 515
 516         rte_smp_wmb();
 517
 518         return 0;
 519 }
 520
 521 static void
 522 set_lcore_state(uint32_t lcore, int32_t state)
 523 {
 524         /* mark core state in hugepage backed config */
 525         struct rte_config *cfg = rte_eal_get_configuration();
 526         cfg->lcore_role[lcore] = state;
 527
 528         /* mark state in process local lcore_config */
 529         lcore_config[lcore].core_role = state;
 530
 531         /* update per-lcore optimized state tracking */
 532         lcore_states[lcore].is_service_core = (state == ROLE_SERVICE);
 533 }
 534
 535 int32_t
 536 rte_service_lcore_add(uint32_t lcore)
 537 {
 538         if (lcore >= RTE_MAX_LCORE)
 539                 return -EINVAL;
 540         if (lcore_states[lcore].is_service_core)
 541                 return -EALREADY;
 542
 543         set_lcore_state(lcore, ROLE_SERVICE);
 544
 545         /* ensure that after adding a core the mask and state are defaults */
 546         lcore_states[lcore].service_mask = 0;
 547         lcore_states[lcore].runstate = RUNSTATE_STOPPED;
 548
 549         rte_smp_wmb();
 550         return 0;
 551 }
 552
 553 int32_t
 554 rte_service_lcore_del(uint32_t lcore)
 555 {
 556         if (lcore >= RTE_MAX_LCORE)
 557                 return -EINVAL;
 558
 559         struct core_state *cs = &lcore_states[lcore];
 560         if (!cs->is_service_core)
 561                 return -EINVAL;
 562
 563         if (cs->runstate != RUNSTATE_STOPPED)
 564                 return -EBUSY;
 565
 566         set_lcore_state(lcore, ROLE_RTE);
 567
 568         rte_smp_wmb();
 569         return 0;
 570 }
 571
 572 int32_t
 573 rte_service_lcore_start(uint32_t lcore)
 574 {
 575         if (lcore >= RTE_MAX_LCORE)
 576                 return -EINVAL;
 577
 578         struct core_state *cs = &lcore_states[lcore];
 579         if (!cs->is_service_core)
 580                 return -EINVAL;
 581
 582         if (cs->runstate == RUNSTATE_RUNNING)
 583                 return -EALREADY;
 584
 585         /* set core to run state first, and then launch otherwise it will
 586          * return immediately as runstate keeps it in the service poll loop
 587          */
 588         lcore_states[lcore].runstate = RUNSTATE_RUNNING;
 589
 590         int ret = rte_eal_remote_launch(rte_service_runner_func, 0, lcore);
 591         /* returns -EBUSY if the core is already launched, 0 on success */
 592         return ret;
 593 }
 594
 595 int32_t
 596 rte_service_lcore_stop(uint32_t lcore)
 597 {
 598         if (lcore >= RTE_MAX_LCORE)
 599                 return -EINVAL;
 600
 601         if (lcore_states[lcore].runstate == RUNSTATE_STOPPED)
 602                 return -EALREADY;
 603
 604         uint32_t i;
 605         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 606                 int32_t enabled =
 607                         lcore_states[i].service_mask & (UINT64_C(1) << i);
 608                 int32_t service_running = rte_services[i].runstate !=
 609                                                 RUNSTATE_STOPPED;
 610                 int32_t only_core = rte_services[i].num_mapped_cores == 1;
 611
 612                 /* if the core is mapped, and the service is running, and this
 613                  * is the only core that is mapped, the service would cease to
 614                  * run if this core stopped, so fail instead.
 615                  */
 616                 if (enabled && service_running && only_core)
 617                         return -EBUSY;
 618         }
 619
 620         lcore_states[lcore].runstate = RUNSTATE_STOPPED;
 621
 622         return 0;
 623 }
 624
 625 static void
 626 rte_service_dump_one(FILE *f, struct rte_service_spec_impl *s,
 627                      uint64_t all_cycles, uint32_t reset)
 628 {
 629         /* avoid divide by zero */
 630         if (all_cycles == 0)
 631                 all_cycles = 1;
 632
 633         int calls = 1;
 634         if (s->calls != 0)
 635                 calls = s->calls;
 636
 637         fprintf(f, "  %s: stats %d\tcalls %"PRIu64"\tcycles %"
 638                         PRIu64"\tavg: %"PRIu64"\n",
 639                         s->spec.name, service_stats_enabled(s), s->calls,
 640                         s->cycles_spent, s->cycles_spent / calls);
 641
 642         if (reset) {
 643                 s->cycles_spent = 0;
 644                 s->calls = 0;
 645         }
 646 }
 647
 648 static void
 649 service_dump_calls_per_lcore(FILE *f, uint32_t lcore, uint32_t reset)
 650 {
 651         uint32_t i;
 652         struct core_state *cs = &lcore_states[lcore];
 653
 654         fprintf(f, "%02d\t", lcore);
 655         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 656                 if (!service_valid(i))
 657                         continue;
 658                 fprintf(f, "%"PRIu64"\t", cs->calls_per_service[i]);
 659                 if (reset)
 660                         cs->calls_per_service[i] = 0;
 661         }
 662         fprintf(f, "\n");
 663 }
 664
 665 int32_t rte_service_dump(FILE *f, uint32_t id)
 666 {
 667         uint32_t i;
 668         int print_one = (id != UINT32_MAX);
 669
 670         uint64_t total_cycles = 0;
 671         for (i = 0; i < rte_service_count; i++) {
 672                 if (!service_valid(i))
 673                         continue;
 674                 total_cycles += rte_services[i].cycles_spent;
 675         }
 676
 677         /* print only the specified service */
 678         if (print_one) {
 679                 struct rte_service_spec_impl *s;
 680                 SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 681                 fprintf(f, "Service %s Summary\n", s->spec.name);
 682                 uint32_t reset = 0;
 683                 rte_service_dump_one(f, s, total_cycles, reset);
 684                 return 0;
 685         }
 686
 687         /* print all services, as UINT32_MAX was passed as id */
 688         fprintf(f, "Services Summary\n");
 689         for (i = 0; i < rte_service_count; i++) {
 690                 uint32_t reset = 1;
 691                 rte_service_dump_one(f, &rte_services[i], total_cycles, reset);
 692         }
 693
 694         fprintf(f, "Service Cores Summary\n");
 695         for (i = 0; i < RTE_MAX_LCORE; i++) {
 696                 if (lcore_config[i].core_role != ROLE_SERVICE)
 697                         continue;
 698
 699                 uint32_t reset = 0;
 700                 service_dump_calls_per_lcore(f, i, reset);
 701         }
 702
 703         return 0;
 704 }